There is described a novel process for the manufacture of hydroquinone derivatives of the formula ##STR1## wherein R represents an ether protecting group, and their conversion into d-.alpha.-tocopherol starting from compounds of the formula ##STR2## wherein R has the above significance.
本发明描述了一种制备式为##STR1##的羟基苯醌衍
生物的新工艺,其中R代表醚保护基,并从式##STR2##的化合物开始将其转化为d-α-
生育酚,其中R具有上述意义。